- drill pipe joints
- 钻: drill; auger
- 管接头: union joint; nozzle; union c ...
- 管接头: (管材的连接件) union joint; nozzle; union coupling; sleeve; pipe fittings; pipe joint; bean; pipe connection; pipe coupling; pipe head; pipe junction; pipe tap connection; port fitting; tube union
- 管接头（接头）: pipe joint
- t形管接头: tee
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